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y in (-oo:+oo)
(-3/8)*(y-5) = (-2/3)*(y+2) // - (-2/3)*(y+2)
(-3/8)*(y-5)-((-2/3)*(y+2)) = 0
(-3/8)*(y-5)+(2/3)*(y+2) = 0
2/3*(y+2)-3/8*(y-5) = 0
2/3*(y+2)-3/8*(y-5) = 0
7/24*y+77/24 = 0
7/24*y+77/24 = 0
7/24*y+77/24 = 0 // - 77/24
7/24*y = -77/24 // : 7/24
y = -77/24/7/24
y = -11
y = -11
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